Grain shelling and hulling device.



PATENTED NOV. 13

0. DE A. CAMARGO.

GRAIN SHELLING AND HULLING DEVICE.

ABPIIIOATION FILED FEB 1, 1906.

' 3 SHEETS-SHEET 1.

ATTORNEYS 3 SHEETS-SHEET 2.

PATENTED NOV. 13, 1906.

0. DE A. GAMARGO. GRAIN SHELLING AND HULLING-DBVIGE.

APPLIUATION FILED FEB. 1, 1906.

W/TNESSES:

PATEN-TED NOV. 18, 1906. OJDE A. CAMARGO. GRAIN SHELLING AND HULLINGDEVICE.

APPLICATION FILED FEB. 1, 1906.

3 SHEETS-SHEET 3.

. W/T/VESSES:

A TTOHNEYS THE NuRRIs PETERS cm, wasnmomu, u. c.

UNITED TATE P NT OFFICE.

, oor-Avro DE ALMEIDA" o ARGo. OF Rio OLAROyBRA ZIL.

GRAIN SHELLING AND HULLING DEV IC|E.

Toall whom it mag conceive.-

Be it known-that I, OOTAVIO DE ALMEIDA CAMARGO,a citizen of the Republicof Brazil,

and a resident of the city of Rio Claro, State of. S50 Paulo,-Brazil,have invented new and Improved Grain Shelling and Hulling Devices,-fwhich the.following is a full, clear, and exact description. I

The invention has reference more especially to devices for shelling andhulling coffee,-. although equally applicable: to the U shelling andhulling of other grains or mate- I rials ;and one of the principalobjects thereof is toprovide devices for this purpose of an embodimentto overcomenumerous disadvantages and ob ections frequentlyencounteredin the use of many other devices hitherto employed for similarpurposes..

A further object, of the invention is to provide adevice of thiskind-which is exceedingly simple in general construction, a as well asbeing economic-from a manufacturing standpoint, and which isalso-effective and reliable n operation, possessing the capacity forlong and repeated service. I

- The invention cons sts the novel construction and combination of theseveral parts, as will be hereinafter, fully set forth, and-pointed outin-the claims.-

Reference is to be had to theaccompanying drawings, forming apart ofthis specification in which similar characters of reference'indicate'corresponding parts inall the figuresa: f 1 Figured is a sectionalside.,elevation, of .the'machine, the section being taken practically onthe line 1 1 of Fig. 2.

.4 4.of=Fig:,-

Fig. 5 is an innerfacetvi 'e 9f a Stationary grinding-head for thcylinders. Fig. 6. is an o'utenfae :the. revolving grinding-head forminga portion ofthe rotating-grinding lindeiji, which head is adaptedtobeoppcseg the stationary head shown in:- Fig. 5:'.';' Fig. 7-is adiagrammatic viewof a portion of the rotating grinding and hullingcylinder laid flat Sis a detail sectional. side, elevation of means for.adjusting the driveeshaft, the sectionbeing taken on the line 8 8 ofFig' 2; and Fig.

Specification of Letters Patent.

Application filed February 1. 1906. flerial No 298.958.

Patented Nov. 13, 1906.

9 is a plan view of the mechanism shown'in Fig. 8.

\ The frameof the machine consists of two cheek-pieces 10, one being atthe front and the other at the rear, w-hich cheek-pieces are preferablyin the form of channel-irons, their flanges facing outward, and supportsA, each;

support-comprising an upper bar member 11,011 which the cheek-pieces arebolted inany approved manner, and two legs 12,one. at the front and theother at the rear, and the legs at each end of the frame-are suitablybraced and are connected, by rods 13 or their equivalentsg Y 3 4 'Acylindrical body;B is supported between the cheek-pieces lO by means'offeet 14, ex-

tending from the front to the rear of-the said body, which feet aresecured in any suitable or approvedmanner' to the upper portions ofthecheek-pieces 10. The cylindrical body B is constructed, preferably,-intwosections divisible one from the other, and preferably the'oiivision,ismade at the central portion of said body, as is clearly shown in Figs.2 and 3. The upper section of the body is designated as 15 and thelowensection as.16.

At the meeting edges of the sections 15 and 16 of the body 13outwardly-extending mating lugs-,17 are formed, themating lugs beingsecured together by-bolts- 18 orthe'ir equivalents, and at the endportions ofthe said cylindrical bodyB. apertured lugs 1 9 are carriedoutward from the said body at right angles thereto, and the endsof thebody B are closed by a left-hand head 20 and a right hand head 21-, theheads being provided with peripheral lugs 2 3, which are secured to thecorresponding lugs. 19 on the periphery of the body by suitable bolts22, as is shown in Figs. 1, 2, and-4.

A. drive shaft-C is. carried loosely through the fixed cylindricalbodyB, and said shaft I Cat itsiouterends is journaled-in bearings 24,

secured to the-supportsAbetween the cheek pieces 10, as is shown inFig.2, and at the left-hand end of the shaft O; a glriying pulley 25 issecured-which may be:;accompanied by a loose pulley, if desired, and atthe left-hand endof the shaft 0 arr-enlargement 26 is formed. v

portion of the right-hand head 20 Oftheb dy --B,, as i s ho i Fig? w z pl ll receives the lower end of an inclinedspout 28, secured to a hopper29 of anysuitablede} scription and in which the grain to be bullied Anopening the-upper TOO is placed. An opening is made in the upper rearperipheral portion of the casing B, as is shown in Fig. 1, andthis'opening is surrounded by the enlarged end of a spout 31, whichspout has a downward and rearward inclination and is connected with atrunk C, which trunk is located at the rear of the ma chine, extendingabove and below the cylindrical body B, being suitably attached to theframe of the machine. This trunk C is rectangular in cross-section; butits upper end 31: 2 is preferably circular, as illustrated in ig. 2.

The trunk C is divided into two sections 33 and 34, the section 33,which is the inner section, being longer than the section 34.

The longer section 33 is open at its lower end, @while the shortersection 34 has a closed lower .end.34, and the division in the saidtrunk is produced by means of a vertical partition which extends fromthe lower end of the shortersection '34 of said trunk up to within apoint near the top of said trunk, said partition 35, as shown in Fig. 2,being usually carried some distance upward above the line of the uppersurface of the cylindrical body B, so that the only communicationbetween the two sections 33 and 34 of the trunk C is at the upperportion of the trunk or above the partition 35. The spout 31, leadingfrom the body B, extends into the upper portion of the longer section 33of the trunk, as 5 is shown in Fig. 2,.

An opening 36 is made in the bottom of the cylinder B, as is shown inFigs. 3 and 4, and 1 at the sides of this opening36 cheek-pieces 37 and38 are preferably made integral with the said cylindrical body,extending downward therefrom, which cheek-pieces are usu- I of segmentalshape and extend the length of the opening 36. The cheek-piecej ally 37is provided with a central opening 37 therein, and the cheek-piece 38 isprovided with a corresponding opening 3.8. Each cheek-piece is providedat its inner face with a marginal-flange 39 and at its edge with aperipheral flange 40, as clearly shown in A dust-box D is locatedbetween the cheekpieces 37 and 38, the said dust-box being ofcorresponding shape to the said cheekpieces namely, segmentaland thesaid box D, preferably at its rear end, has a hinged connection 41 withthe outer face of the cylindrical body B, as is best shown in Figs. 1and 3, the other end of the dust-box when in closed position beingadapted to engage with the body B at the opposite end of the opening36,- as is clearly shown in Fig. 3, and when the dust-box is in positionto practically close the opening 36 its inner end surface will be inengagement with the inner flanges 39 of the cheek-pieces 37 and 38 andthe outer-end portions of said box will be in engagement with theperipheral flanges 40 of said cheek-pieces, as is illustrated in Fig. 4.The top of thedust-box D is covered by a screen 42, which when thedust-box is closed against the cylindrical body forms a direct coveringfor the. opening 36. This box, as its name indicates, is adapted tocollect the dust, hulls, and chaif received in the cylindrical body Bduring the process of cleaning or hulling the grain. readily emptied orcleaned by dropping the box to the dotted position shown in Fig. 3.

The dust-box D may be held in its upper or normal position in many ways;but by preference a lever D is employed, which lever has a forked rearend section 43, pivotally connected tolugs 42, extending down from theend portions of the dust-box, as is shown in Fig, 4, and the handleportion of the lever D, whichis carried to the front, is ivotallyconnected to a hook-shaped latch The dust-box may be 44, which latchwhen the dust-box is closed 1 section as close as possible to its bottom34 I A second pipe 47 is secured in the opening 37 a of the right-handcheek-piece 37, and this second pi e 47 is carried down to a connectionwith t e-casing 48 of an exhaust-fan,

the fan beingmounted upon a shaft 49, suitably journaled in the lowerportion of the frame and provided with a drivingulley 50.

It may be here remarked that t e feed of the material from the ho er 29to the cylindrical body B is contro ed by means of a v slide 51, locatedin the spout 28 of the hopper, being operated from the'outside, and thesaid slide is held in adjusted position by a spring-finger 52, as shownin Fig. 2, and the slide operates upon suitable battens 53,

formed within the said s out 28.

In connection wit-ht e cylindrical 'fixed body B, I employ'twoshelling-heads E and E. The shelling-head E, which-is the outer head, isrigidly secured in the said body, and the head E, which is the innerhead, is ada tedt-o revolve within the body. The shel ing-head E issecured at its marginal portion to the right-hand head 20 of the saidbody B by means of screws or bolts 54 or their equivalents, and the saidshelling-head E is provided with a central hub, through which the shaftC loosely passes, and with an opening 55, which registers with theopening 27 in the right-hand head of the said body B,

through which opening 55 theinner end of the hopper-spout 28 passes, as"is shown in Fig. .4. The shelling-heads Eand E are made to face eachother, and the inner or working'face of the head E is inclined from thehub 56 inward or in direction of the opposing head E, and adjacent tothe periphery -of the 'saidfixed shelling-head E a shallow-groove 57 isproduced inthe inner or Working'face of said headE', and this groovedsurface is covered by awire-mesh clot-h 58 or the'equivalent thereof,wire-mesh cloth being the covering which is preferred.

A. series of radially-disposed distributingribs 59 extend from the innermarginal portion of the groove 57 to a point around the hub 56, the saiddistributing-ribs being arched to a greater or lesser extent, and theseribs are also preferably of solid formation.

The shelling-head E has its hub portion secured to the shaft C, and theshelling-head E constitutes the right-handhead for a' shelling-cylinderE the left-hand head 53 of the said shelling-cylinder being a plainhead, asshown in Fig. 4. The rotary'shellinghead E is'inclined upon itsouter or operating face from its hub to its periphery, the inclinationof the working-or operating face-of the "shelling-head E being outwardlyor in direction of the corresponding faceof the fixed shellinghead E,-asis shown in Fig. 4. Thus itwill' be observed that the-shelling headsEand E approach. each other quite closely at their peripheral portionsand are more or less widely separated at their central or hub portions.

The outer or operating face ofthe-rotary shelling-head E is'cover'edfrom'its hub to its periphery with wireemesh cloth '60, andshelling-plates 61 are secured to the working or operating face of thesaid rotary shelhng-' head E, which plates are at right angles to the,said head and-extend from the hub portions to points nearthe-periphery,an'd the said plates are radially arranged relatively to V the hub andare tapering, being narrowest at their outer ends;'but the longitudinalworking edges 61 of the plates 61 are straight, as

is clearly shown in Fig. 4, the arrangement of the plates or bladesbeing best shown in Fig. 6.

' The ribs 59 serve to distribute the coflee'or other grain fed betweenthe two shellinghcads and cause the grain to circulate and approach theouter edges of the heads E and E, the plates or blades 61 acting inconjunction with the 'ribs' 59 to initiallyshellthe' grain, and thebulls of the grain which escape theaction of the central portionofthe'shelling-heads are removed, as the grain reaches the peripheralportions of said heads, by'rolling contact with the abradingsurfaces atsuch portions ofsaid shelling-head's.

The shaft is sprin '-cus'hioned at its lefthand end, so that if a ardobject, such as a stone,should find its way with the grain between theshelling heads E and E the said heads will not be injured, since theshaft C, carrying the rotating-head E, would move endwise until suchobject wasfreed, and thenthe' spring-cushion" will return the shaft andthe head carried thereby to'its normal position. It is also advisableat'times'to adjust the rotating shelling-head Erelatively-to the fixedshelling-head E, so that-large or small beans or grain can beaccommodated. Such adjustments are niade as illustrated in Figs.

the left-hand journal-box24 is provided with outwardly-extending sleeves62 atits ends, and rods 63 are assed through said sleeves .into thejournalox 24-, where the said rods are secured, and the rods"63 arepassed through eyes at the end of a connecting-bar 64, and the' threadedstem 65-of a wheel-66 is passed through the central portionof the saidconnecting-bar to a bearing against the enlarged left-hand end 26 of thesaid shaft 0. Springs 67 are coiled around the outer ends of the rods63, having bearing against the ends of the sleeves 62 and against theconnect ing-bar 64, which latter is held in place by nuts on the ends ofthe rods 63. After adjustment of the shaft has been made the shaftis'held in its adjustedposition b'y'means stem of the wheel 66, and asthe two shelling heads E and E are brought together by such adjustmentthetension of the springs 67- is increased l The suction in the trunk Cis regulated by producing an opening 69 in one of its sides, as isshownbest in Fig' 1, which openingis regulated by means of a sliding gateor'darnper 70, andi-t may be hereremarked 'thatthe fanshaft 49 isdrivenfro'm the drivershaftOby placing-a pulley 71*on' the left-hand.end portion of the drive-shaft, w-hichpulley' is belted to the pulley Ocinthe'faneshaft;

tion of the shellingi-cylihder directingblocks- 7 2 are externallysecured," occupying a" diagonal position-on the said periphery ofthe'said'cylinder, asis best shownin FigS.-"3 v and 7, and these blockshaveithe'irl ed'ges 73 more or lessbeveled, and their inner endsfareinclined down to the surfaceof the shelling- -cylinder E tomeetdirecting-plates 74,"also inder, which plates are diagonally arrangedalso, and atthe opposite or'left h'and end of the cylinder stop-plates75 are placed in order to prevent the shelled products from passing offat saidright-hand endofthe cylinder, since when the shelling-cylinder TErevolves the "grains and'hullsare gathered 'by the directing-bl'ocks 72,which closely approach the rect the said material to thedirecting-plates,

which carry the material upward until the At the .left-h' ndi-endo'fthe"per pheratp or- 2, 8, and9, wherein it will be observed that of alock-nut 68', mounted on thethreaded exteriorly secured to the outerface of thecyl- -inner face'of the cylindrical body B'a'nd diopening 30is reached in the cylindrical casing B, whereupon the shelled materialand the hulls or husks are forced into the spout 31, and from said spoutthey are drawn by suction into the trunk C, where the grains, beingheavy, drop down through the longer section 33 thereof and down to thebottom-of said section, while the hulls and other light particles aresucked down into the shorter section 34 and are drawn from thencethrough the dust-box D to the pipe 47 and finally reach the fan-casing48, where they are discharged into the atmosphere. It may sometimeshappen that the beans or grain will not be entirely shelled by theaction of the ribs 59, the plates 61, and the abrasive facings on theshelling-heads E and'E.v Therefore at the front lower portion of thefixed cylindrical body B a horizontal slot 77 is made, and -ashelling-plate 76 is passed through the said slot into the space betweenthe fixed cylindrical body B and the hulling or shelling. cylinder E asis best shown in Fig. 3. This shelling-plate 76 is adjustable and restsupon studs 78, secured to or constituting anintegral portion of theupper flange of the front cheek-piece 10 of the frame, and the plate isprovided above said studs with slots'80, through which bolts are passedinto the saidst-uds. Eyes 82 are formed at the end portions ofthe'shelling-plate 76, and setscrews 81 are passed through. these eyesto a bearing against the outer face of the cylindrical body B. In thismanner the shellingplate 76 is rendered adjustable and can be heldin-adjusted position, and, if desired, the set-screws 82 may entersuitable taps in said cylindrical body. Y

Inthe operation of the shelling plate or blade 76 as the grain or beansare carried around and up to be discharged, they will be subjected tothe abrasive .or shelling action when the directing-blocks 72 pass thesaid plate 76, thus insuring all of the beans or grain being properlyrelieved from shells or hulls." 'Thus it will be observed that the twoheads'E'and "E perform the initial or rough work of shelling and thatthe shelling-cylinder E its directing blocks, and the shelling blade orplate 76 finish the shelling operation.

' Having thus described my invention, I claim as new and desire tosecure bv Letters Patent v i 1. A device for shelling and hulling coffeeand the like comprising a cylindrical casing, a shelling-head secured toone end thereof, a shaft journaled in the casing, a cylinder secured tothe shaft and provided at one end With a shelling-head cooperating withthe 'shelling-head-of the casing, directing blocks and plates upon theperiphery of the cylinder, an adjustable shelling-blade cooperating withthe directing blocks and plates, and a trunk divided into two sectionsindependent at the bottom and connected at thetop, one of said sectionsbeing connected with the casing, and an exhaust-fan connected with theother section. i

2. A device for shelling and hulling cofiee and the-like comprising acasing, a shellinghead secured to one end thereof, a shaft journaled inthe casing, a cylinder secured to the shaft and provided at one end witha shellinghead cooperating with the shelling-head of the casing,directing blocks and plates upon the peri hery of the cylinder, and anadjustable she ling-blade cooperating with the directing blocks andplates, said shaft being Inountedto yield in one direction, whereby topermit the separating of the shellingheads.

3. A device for shelling and hullingcoifee and the like comprising a"casing, a. shellinghead secured to one end thereof, a shaft journaledin the casing and mounted/to yield with respect to the casing andprovided at one end with a shelling-head cooperating with theshelling-head of the casing, directing blocks and plates upontheperiphery of the cvlinder an adjustable shelling-blade cooperating withthe directing-blocks, a trunk comprising two sections independent at thebottom and connected at the top, one of said sections being connectedwith the casing, an'exhaustfan connected with the other section, and-.adust-box communicating with the casing and with said last-named sectionof the trunk.

4. In a device for shelling and hulling coffee and thelike, a stationarycasing, a shelling-head rigidly supported therein, a rotatable shaftextending through bearings in said head and in opposing walls of thecasing, a second shelling-head mounted to rotate with the said shaft,the two shelling-heads being dished in'opposite :direc-tions, theirdished or working faces being provided with abradingsurfaces embodyingrings of peripherallylocated wire-gauze and projections from their hubportions, the said casing being provided with an opening-in'one ofitsends, the stationary shelling-head being provided with acorresponding opening, a hopper extending through the said opening, thesaid casing being provided with another opening at its upper portion atthe opposite end, a spout connected with the said upper opening, a trunkdivided into two sections, independent at the bottom and connected atthe top, one of which sections isconnected with the said spout, and anexhaust-fan connected with IIO the said shelling-head, a shaft mountedto revolve in bearings in the casing and in the said fixedshelling-head, a second shelling-head secured to the said shaft, theopposing or working faces of the two heads being dished in oppositedirections and provided with opposing abrading-surfaces embodying ringsof wire-gauze, a cylinder secured to the said shaft Within the casing, arotatable shellinghead constituting an end portion of said cylinder,diagonal directing-blocks secured to the peripheral portion of saidrotatable cylinder, extending to the shelling-head thereof, and diagonalplates or blades of lesser depth extending from the said blocks to theopposite end, whereby to carry the material from the casing to the upperopening therein, a trunk divided into two sections connected at the top,one section being closed at the bottom and the other section open at thebottom, a spout connecting the upper section of the trun: with the saidcasing at itsupper opening, and an exhaust-fan connected with v theclosed section of the trunk, all operating substantially as described.

6. In a device for shelling and hulling coffee and the like, astationary casing having an opening at one end and an opening at thetop, a shelling-head secured at one end portion of the said casing andprovided with an opening registering with that in the end portion of thecasing, a hopper which is carried through the end opening in said casingand the corresponding opening in said shellinghead, a shaft mounted torevolve in bearings in the casing and in the said fixed shellinghead, asecond shelling-head secured to the said shaft, the opposing or workingfaces of the two heads being dished in opposite directions and providedwith opposing abradingsurfaces embodying rings of wire-gauze, a cylindersecured to the said shaft within the casing, the rotatable shelling-headconstituting an end portion of said cylinder, diagonal directing-blockssecured to the peripheral portion of said cylinder, extending to theshelling-head thereof, and diagonal plates or blades of lesser depthextending from the said blocks to the opposite end, whereby to carry thematerial from the casing to the upper opening'therein, a trunk dividedinto two sections connected at the top, one section being closed at thebottom and the other section open at the bottom, a spout connecting theopen section of the trunk with the said casing at its upper opening, anexhaust-fan con: nected with the closed section of the trunk, and anadjustable shelling-blade mounted outside of the casing and extendingwithin the same, which adjustable shelling-blade is adapted to. coactwith the directing-blocks on the said rotatable cylinder to finally actupon the beans or grain in the hulling operation.

' In testimony whereof I have signed my name to this specification inthe presence of two subscribing witnesses.

OCTAVIO DE ALMEIDA CAMARGO.

Witnesses:

FRANCISCO DE OAMAReo, YoRDAo CORREA.

